private PagerState.AllocationInfo RemapViewOfFileAtAddress(long allocationSize, ulong offsetInFile, byte *baseAddress)
{
var offset = new SplitValue {
Value = offsetInFile
};
var mmf = MemoryMappedFile.CreateFromFile(_fileStream, null, _fileStream.Length,
_memoryMappedFileAccess,
null, HandleInheritability.None, true);
var newMappingBaseAddress = Win32MemoryMapNativeMethods.MapViewOfFileEx(mmf.SafeMemoryMappedFileHandle.DangerousGetHandle(),
Win32MemoryMapNativeMethods.NativeFileMapAccessType.Read | Win32MemoryMapNativeMethods.NativeFileMapAccessType.Write,
offset.High, offset.Low,
new UIntPtr((ulong)allocationSize),
baseAddress);
var hasMappingSucceeded = newMappingBaseAddress != null && newMappingBaseAddress != (byte *)0;
if (!hasMappingSucceeded)
{
mmf.Dispose();
return(null);
}
return(new PagerState.AllocationInfo
{
BaseAddress = newMappingBaseAddress,
Size = allocationSize,
MappedFile = mmf
});
}
/// <summary>
/// Returns true if PdfSplitParameters instances are equal
/// </summary>
/// <param name="input">Instance of PdfSplitParameters to be compared</param>
/// <returns>Boolean</returns>
public bool Equals(PdfSplitParameters input)
{
if (input == null)
{
return(false);
}
return
((
FileId == input.FileId ||
(FileId != null &&
FileId.Equals(input.FileId))
) &&
(
SplitMethod == input.SplitMethod ||
SplitMethod.Equals(input.SplitMethod)
) &&
(
SplitValue == input.SplitValue ||
SplitValue.Equals(input.SplitValue)
) &&
(
ImmediateDownload == input.ImmediateDownload ||
ImmediateDownload.Equals(input.ImmediateDownload)
));
}
/// <summary>
/// Gets the hash code
/// </summary>
/// <returns>Hash code</returns>
public override int GetHashCode()
{
unchecked // Overflow is fine, just wrap
{
int hashCode = 41;
if (FileId != null)
{
hashCode = hashCode * 59 + FileId.GetHashCode();
}
hashCode = hashCode * 59 + SplitMethod.GetHashCode();
hashCode = hashCode * 59 + SplitValue.GetHashCode();
hashCode = hashCode * 59 + ImmediateDownload.GetHashCode();
return(hashCode);
}
}
private PagerState.AllocationInfo RemapViewOfFileAtAddress(long allocationSize, ulong offsetInFile, byte* baseAddress)
{
var offset = new SplitValue { Value = offsetInFile };
var mmf = MemoryMappedFile.CreateFromFile(_fileStream, null, _fileStream.Length,
_memoryMappedFileAccess,
null, HandleInheritability.None, true);
var newMappingBaseAddress = Win32MemoryMapNativeMethods.MapViewOfFileEx(mmf.SafeMemoryMappedFileHandle.DangerousGetHandle(),
Win32MemoryMapNativeMethods.NativeFileMapAccessType.Read | Win32MemoryMapNativeMethods.NativeFileMapAccessType.Write,
offset.High, offset.Low,
new UIntPtr((ulong)allocationSize),
baseAddress);
var hasMappingSucceeded = newMappingBaseAddress != null && newMappingBaseAddress != (byte*)0;
if (!hasMappingSucceeded)
{
mmf.Dispose();
return null;
}
return new PagerState.AllocationInfo
{
BaseAddress = newMappingBaseAddress,
Size = allocationSize,
MappedFile = mmf
};
}
